Blackfin dct_quantize_bfin routine

2x performance boost in performing quantization for mpeg encoding

Originally committed as revision 9293 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 68 insertions, 0 deletions

diff --git a/libavcodec/bfin/dsputil_bfin.h b/libavcodec/bfin/dsputil_bfin.h
new file mode 100644
index 0000000000..d972e7faec
--- /dev/null
+++ b/libavcodec/bfin/dsputil_bfin.h
@@ -0,0 +1,68 @@
+/*
+ * BlackFin DSPUTILS COMMON OPTIMIZATIONS HEADER
+ *
+ * Copyright (C) 2007 Marc Hoffman <mmh@pleasantst.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#ifndef DSPUTIL_BFIN_H
+#define DSPUTIL_BFIN_H
+
+#define attribute_l1_text  __attribute__ ((l1_text))
+
+#ifdef BFIN_PROFILE
+
+static double Telem[16];
+static char  *TelemNames[16];
+static int    TelemCnt;
+
+#define PROF(lab,e) { int __e = e; char*__lab = lab; uint64_t _t0 = read_time();
+#define EPROF()       _t0 = read_time()-_t0; Telem[__e] = Telem[__e] + _t0; TelemNames[__e] = __lab; }
+
+static void prof_report (void)
+{
+    int i;
+    double s = 0;
+    for (i=0;i<16;i++) {
+        double v;
+        if (TelemNames[i]) {
+            v = Telem[i]/TelemCnt;
+            av_log (NULL,AV_LOG_DEBUG,"%-20s: %12.4f\t%12.4f\n", TelemNames[i],v,v/64);
+            s = s + Telem[i];
+        }
+    }
+    av_log (NULL,AV_LOG_DEBUG,"%-20s: %12.4f\t%12.4f\n%20.4f\t%d\n",
+            "total",s/TelemCnt,s/TelemCnt/64,s,TelemCnt);
+}
+
+static void bfprof (void)
+{
+    static int init;
+    if (!init) atexit (prof_report);
+    init=1;
+    TelemCnt++;
+}
+
+#else
+#define PROF(a,b)
+#define EPROF()
+#define bfprof()
+#endif
+
+#endif